The MC14511BDG is a BCD-to-Seven Segment Latch/Decoder/Driver constructed with complementary MOS (CMOS) enhancement mode devices and NPN bipolar output drivers in a single monolithic structure. The circuit provides the functions of a 4-bit storage latch, an 8421 BCD-to-seven segment decoder and an output drive capability. Lamp test (LT), blanking (BI) and latch enable (LE) inputs are used to test the display, to turn-off or pulse modulate the brightness of the display and to store a BCD code, respectively. It can be used with seven-segment light-emitting diodes (LED), incandescent, fluorescent, gas discharge or liquid crystal readouts either directly or indirectly.
Low logic circuit power dissipation
Latch storage of code
Blanking input
Lamp test provision
Readout blanking on all illegal input combinations
